Problems with RW discs

I am using Nero 7 Ultra. I have been taking some of my RW dvds and use Nero to add menus and make new dvdrs. My problem is when I play the finished dvd back, I notice the movie is broken down into 1 minute 40 second incriments. The movies stutters every 1:40. How can I get these files to merge and avoid these skips??? Thanks.

I am recording 30 minute tv shows onto rw discs on my dvd recorder and then use nero to make menus for the shows and then burn them to a dvdr disc. The episodes are broken down into 1:40 incriments (media files). So a 30 minute show may have 15 of these glitches in it. Sometimes the problem only occurs at the first 1:40 minute mark and then the rest of the show plays fine. Most of the time the shows skips or stutters every 1:40. If I use a dvdr disc for the source their is no problem, but that disc is wasted because I want the fancy menus and easy episode selection.

All I might suggest would be to use NeroVision to edit out a couple of frames around the glitches to see if it might help. Maybe if you use the stepper to go through the glitch section on an expanded scale, you might see the distortion.